Targeted at the phenomenon of offshore wind turbine blades cracking and tearing up, the corrosion mechanism on offshore wind turbine blade in salt fog environment is researched. By means of analyzing the blades structural damage and the corrosion in salt fog environment, the main damage forms of the blades can be summed up with a further view to discussing and analyzing the corrosion mechanism on offshore wind turbine blade in salt fog environment from the perspective of both physical and chemical corrosion. A final conclusion is reached which shows that the pitted surface of the blade developed from the pumping and milling of sand blown by wind is the incentive and hydrone diffusion and ultraviolet radiation are the main factors that lead to the aging of materials and corrosion of blades.
Based on the characteristics of green appliances, the green degree evaluation index system is established from environment,resources,energy,economic,technology and society six areas. Fuzzy-EAHP applies the extension analytic hierarchy process (EAHP) to determine index weight of different levels. EAHP, which is more accurate and more objective than the traditional AHP, can quantitatively show the relative important degree between indexes with the extension interval number. Building the Mathematical model of three-lever fuzzy comprehensive evaluation, the first process comprehensive evaluation result is as input data of the latter process. At last, Fuzzy-EAHP is used to synthetically evaluate the green degree of four refrigerators.
Key words: Extension analytic hierarchy process (EAHP); Green degree; Green appliance
SW-GP (Sliding Window-Genetic Programming) algorithm is provided to implement dynamic forecast of monitoring data in order to more effectively utilize coal mine monitoring data to alert and forecast safety accident. In the program, sampling data is obtained by sliding window technology and model is founded automatically by GP algorithm. The result of instance shows that forecasting values from the model well agree with the real values, which explains that employing SW-GP modeling can settle problem for alert and forecast for mine safety monitoring data satisfactorily.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.